PHP Decode

<?php 
set_time_limit(0); 
error_reporting(E_ALL); 
ini_set('display_errors', 'On'); 
 
/** 
 * @author Aris Wibowo <[email protected]> 
 * @license MIT 
 * @version 0.0.1 
 */ 
 
class ARSWB 
{ 
    var $username; 
    var $password; 
    var $reaction_type; 
    var $login; 
    var $home; 
    var $react_detail = array(); 
    var $user_agent = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 10.0; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3)"; 
    public function urlRequest($url, $post = null) 
    { 
        $ch = curl_init(); 
        curl_setopt($ch, CURLOPT_URL, $url); 
        curl_setopt($ch, CURLOPT_USERAGENT, $this->user_agent); 
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); 
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); 
        curl_setopt($ch, CURLOPT_HEADER, true); 
        if ($post != null) { 
            curl_setopt($ch, CURLOPT_POST, true); 
            curl_setopt($ch, CURLOPT_POSTFIELDS, $post); 
        } 
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); 
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); 
        curl_setopt($ch, CURLOPT_COOKIEJAR, dirname(__FILE__) . '/' . $this->username . '.cookie'); 
        curl_setopt($ch, CURLOPT_COOKIEFILE, dirname(__FILE__) . '/' . $this->username . '.cookie'); 
        $exec = curl_exec($ch); 
        curl_close($ch); 
        return $exec; 
    } 
    public function execute() 
    { 
        $furl = "https://mbasic.facebook.com/"; 
        $a    = $this->urlRequest($furl); 
        $s    = explode("type=\"submit\"", $a, 2); 
        $s    = explode("<", $s[0]); 
        $s    = explode("value=\"", end($s)); 
        $s    = explode("\"", $s[1]); 
        $s    = $s[0]; 
        $a    = explode("<form", $a, 2); 
        if (count($a) < 2) { 
            return false; 
        } 
        $a   = explode("</form>", $a[1], 2); 
        $a   = explode("<input type=\"hidden\"", $a[0]); 
        $ps  = ''; 
        $act = explode("action=\"", $a[0], 2); 
        $act = explode("\"", $act[1], 2); 
        $act = html_entity_decode($act[0], ENT_QUOTES, 'UTF-8'); 
        for ($i = 1; $i < count($a); $i++) { 
            $b = explode("name=\"", $a[$i], 2); 
            $b = explode("\"", $b[1], 2); 
            $c = explode("value=\"", $a[$i], 2); 
            $c = explode("\"", $c[1], 2); 
            $ps .= urlencode($b[0]) . '=' . urlencode($c[0]) . '&'; 
        } 
        $ps .= "email=" . urlencode($this->username) . "&pass=" . urlencode($this->password) . "&login=" . urlencode($s); 
        return $this->login = $this->urlRequest($act, $ps); 
    } 
    public function reactpost() 
    { 
        $this->home = $this->urlRequest("https://mbasic.facebook.com"); 
        preg_match_all("/<a href=\"\/reactions\/picker\/(.*?)\">/", $this->home, $this->react_detail); 
        $logs = file_exists(dirname(__FILE__) . "/" . $this->username . ".logs") ? file_get_contents(dirname(__FILE__) . "/" . $this->username . ".logs") : file_put_contents(dirname(__FILE__) . "/" . $this->username . ".logs", "1 ", FILE_APPEND | LOCK_EX) && file_get_contents(dirname(__FILE__) . "/" . $this->username . ".logs"); 
        for ($i = 0; $i < count($this->react_detail[0]); $i++) { 
            $status_id = explode("ft_id=", $this->react_detail[0][$i]); 
            $status_id = explode("&", $status_id[1]); 
            $status_id = $status_id[0]; 
            if (!strpos($logs, $status_id)) { 
                preg_match("/href=\"(.*?)\"/", $this->react_detail[0][$i], $react_link); 
                $post = $this->urlRequest("https://mbasic.facebook.com" . $react_link[1]); 
                preg_match_all("/<a href=\"\/ufi\/reaction\/(.*?)\"/", $post, $reaction); 
                $this->reaction_type = strtoupper($this->reaction_type); 
                $reactlist           = array('LIKE' => 0, 'LOVE' => 1, 'HAHA' => 2, 'WOW' => 3, 'SAD' => 4, 'ANGRY' => 5); 
                $this->urlRequest("https://mbasic.facebook.com/ufi/reaction/" . html_entity_decode($reaction[1][$reactlist[$this->reaction_type]], ENT_QUOTES, "UTF-8")); 
                file_put_contents(dirname(__FILE__) . "/" . $this->username . ".logs", $status_id . " ", FILE_APPEND | LOCK_EX); 
                echo('<p style="color:green;">' . $status_id . ' Success! </p>'); 
            } else { 
                echo('<p style="color:red;">' . $status_id . ' Skip! </p>'); 
            } 
        } 
    } 
} 
 
/** 
 * Bot Configs 
 */ 
$bot                = new ARSWB; 
$bot->username      = "yayangkasep.id"; // username 
$bot->password      = "hwhw2haha1";   // password 
$bot->reaction_type = "SAD";   // LIKE,LOVE,HAHA,WOW,SAD,ANGRY 
$bot->execute(); 
$bot->reactpost(); 
var_dump($bot); 
?>